Okla. Stat. tit. 18, § 18-564.4
Notice of hearing
Notice of hearing of said petition shall be given by publication
in a newspaper published in the town or city where the church or
religious organization was located if there be one, and if there be
none, then in a newspaper at the county seat of the county, for two
(2) consecutive weekly issues, the first publication being at least
fifteen (15) days prior to the day of the hearing.